Helena Valley Regulating Reservoir Weather Forecast

    • 35
    • 69

    Decreasing Clouds

    • 31
    • 58

    Rain Showers

    • 26
    • 42

    Rain/Snow Likely

    • 25
    • 44

    Chance Snow

    • 28
    • 52

    Rain Likely

    • 26
    • 45

    Chance Snow

    • 26
    • 49

    Chance Snow

Today 27 Mar Helena Valley

Mostly cloudy. A 20 percent chance of rain Showers in the afternoon. Highs 65 to 70. South Winds up to 10 Mph shifting to the west in the afternoon.

Tonight 27 Mar Helena Valley

Mostly cloudy in the evening then clearing. Lows in the mid 30s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Helena Valley Regulating Reservoir Temperature Statistics

March Temperature

Helena Regional Airport (5.6 miles)

  • Lowest 7 March, 2025

    21.8 °F

  • Average March

    41.7 °F

  • Highest 25 March, 2025

    69.1 °F

Climate (2020–Present)

Helena Regional Airport (5.6 miles)

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  • Average Low 2020–2025

    36 °F

  • Average 2020–2025

    47.4 °F

  • Average High 2020–2025

    59.1 °F
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